Electric power storage module

Abstract

An electric power storage module includes an electric power storage device and a holder. The electric power storage device includes a plurality of electrode assemblies that have a cylindrical shape, and a film exterior body that includes a plurality of containers that individually wrap the plurality of electrode assemblies and a sealing part that seals the containers and connects the plurality of containers to each other. The holder includes a side plate extending in an arrangement direction. The side plate includes a plurality of recesses arranged in the arrangement direction and into which the containers are fitted, a first edge and a second edge arranged in an axial direction and extending in the arrangement direction, and a third edge and a fourth edge arranged in the arrangement direction and extending in the axial direction. In addition, the holder includes a first wall plate that is formed by a part of a member forming the side plate and protrudes in an orthogonal direction from at least a part of a region of the first edge.

The invention claimed is: 
     
         1 . An electric power storage module comprising:
 an electric power storage device; and   a holder that holds the electric power storage device, wherein   the electric power storage device includes   a plurality of electrode assemblies that include a cylindrical shape, and   a film outer covering body that includes a plurality of containers that individually wrap the plurality of electrode assemblies and a sealing part that seals the containers and connects the plurality of containers to each other,   the holder includes   a side plate that is provided in an arrangement direction of the plurality of electrode assemblies, the side plate including   a plurality of concavities arranged in the arrangement direction and into which the containers are fitted,   a first edge and a second edge each arranged along an axis of the electrode assemblies and provided in the arrangement direction, and   a third edge and a fourth edge each arranged in the arrangement direction and extending along the axis, and   a first wall plate that is constituted by a part of a member constituting the side plate and protrudes in an orthogonal direction orthogonal to the axis and the arrangement direction from at least a part of a region of the first edge.   
     
     
         2 . The electric power storage module according to  claim 1 , wherein
 the holder includes a second wall plate that is constituted by a part of a member constituting the side plate and protrudes in the orthogonal direction from at least a part of a region of the second edge.   
     
     
         3 . The electric power storage module according to  claim 1 , wherein
 the holder includes a third wall plate that is constituted by a part of a member constituting the side plate, protrudes in the orthogonal direction from at least a part of a region of the third edge, and connected to the first wall plate.   
     
     
         4 . The electric power storage module according to  claim 2 , wherein
 the holder includes a third wall plate that is constituted by a part of a member constituting the side plate, protrudes in the orthogonal direction from at least a part of a region of the third edge, and connected to at least one of the first wall plate and the second wall plate.   
     
     
         5 . The electric power storage module according to  claim 1 , wherein
 the holder includes a fourth wall plate that is constituted by a part of a member constituting the side plate, protrudes in the orthogonal direction from at least a part of a region of the fourth edge, and connected to the first wall plate.   
     
     
         6 . The electric power storage module according to  claim 2 , wherein
 the holder includes a fourth wall plate that is constituted by a part of a member constituting the side plate, protrudes in the orthogonal direction from at least a part of a region of the fourth edge, and connected to at least one of the first wall plate and the second wall plate.   
     
     
         7 . The electric power storage module according to  claim 1 , wherein
 the holder includes   a first wall plate that protrudes in the orthogonal direction from the first edge,   a second wall plate that protrudes in the orthogonal direction from the second edge,   a third wall plate that protrudes in the orthogonal direction from the third edge, and   a fourth wall plate that protrudes in the orthogonal direction from the fourth edge, wherein   the first wall plate, the second wall plate, the third wall plate, and the fourth wall plate are constituted by a part of a member constituting the side plate,   the side plate is surrounded on all sides by the first wall plate, the second wall plate, the third wall plate, and the fourth wall plate.   
     
     
         8 . The electric power storage module according to  claim 1 , wherein
 the electric power storage module includes the plurality of the electric power storage devices,   the side plate includes at least a part that is corrugated plate-shaped with repeated the plurality of concavities and a plurality of convexities in the arrangement direction, the plurality of concavities are provided at the corrugated plate-shaped part and are sandwiched between two of the electric power storage devices,   each of the containers of one electric power storage device is fitted into a corresponding one of the concavities as viewed from one main surface, and each of the containers of another electric power storage device is fitted into a corresponding one of the convexities from a back surface side as viewed from the main surface.   
     
     
         9 . The electric power storage module according to  claim 8 , wherein
 the first edge includes a flat plate-like part provided in the arrangement direction, and   the first wall plate is bent from one end of the flat plate-like part along the axis and protrudes.   
     
     
         10 . The electric power storage module according to  claim 8 , wherein
 the holder includes the second wall plate that is constituted by a part of a member constituting the side plate and protrudes in the orthogonal direction from at least a part of a region of the second edge, wherein   the second edge includes a flat plate-like part provided in the arrangement direction, and   the second wall plate is bent from one end of the flat plate-like part along the axis and protrudes.   
     
     
         11 . The electric power storage module according to  claim 1 , wherein
 the film outer covering body is refracted or curved between adjacent containers among the plurality of containers and meanders in the arrangement direction.